第147章:烧石灰(1 / 2)

贞观悍婿 丛林狼 1281 字 2022-09-26

秦家庄,山坡下。

十几口大窑依次排开,冒着烟,府卫们正忙碌中往窑口送焦炭烧砖,不远处有人运来石头,场地清理出一大片以供堆放,还有人在清理路面,贾有财正高声指挥着大家,秩序井然,热火朝天。

秦怀道观察片刻,见没什么问题后放下心来,走到正在挖的实验窑跟前,以前没做过这种事,全凭感觉判断和指导大家挖窑,找来一些人帮忙砸大石头,忙碌到中午时分,两口实验用小窑总算是挖好。

饭后,秦怀道再次来到小窑前,窑内空荡荡的,也不知道窑壁泥土会不会塌方,心里没底,便找人帮忙拿来之前烧好的废砖,围着窑壁垒一圈权当加固,也能起到阻隔石灰石和泥土的作用。

然后是装窑,石头多了容易塌, 秦怀道让大家先将相对平整的大石头拿过来,放在窑口两侧及后方, 装高一米左右, 中间留空一些, 让石头间尽量交错吻合,大石头耐压, 加上平整叠放不容易倒,交错吻合不容易移动,也不知道这么做对不住, 先做了再说。

中间留空部分用石头继续堆砌,搭成一个倾斜的拱桥,这个空间就是燃烧室,和烧砖差不多,秦怀道试了试, 拱桥很稳固, 应该不会坍塌, 便让大家开始堆放石头, 每块石头中间尽量保持孔隙, 方便空气进入,提高燃烧。

人多力量大,窑又小, 没多久装好, 接下来就是烧, 考虑到石头烧太快容易碎裂导致坍塌, 又是新窑, 窑壁都是泥土, 水气重,不够结实,跟烧砖一样也需要有个过程, 不敢烧太快,秦怀道让大家先小火。

事关重大,秦怀道亲自盯着, 烧了两天后感觉差不多了,窑里面石头和窑壁都没塌的迹象, 应该稳固,便开始中火, 不敢直接大火,怕出事, 没多久发现窑上方的窑帽口热气外溢的厉害, 温度流失。

温度控制不住窑里面的石灰石就烧不透,赶紧找人帮忙用泥土加厚窑帽口,减少热量流失,烧到第四天发现窑帽口里面的石灰石发白,搞不懂这个情况是好是坏,先记录好,等到了晚上发现窑帽口的石灰石呈暗红色,说明温度上来了。

秦怀道琢磨着石灰石必须烧透,温度必须保持一定时间,太短肯定不行,就好比炖骨头,想要炖烂除了保持温度,还得有时间,便让人继续用粘土加厚窑帽口,只留一个很小的口冒出火苗,方便观察里面情况。

窑帽口被封住,里面的高温就窜不出来,只能在窑里面停留,回旋,这么做也不知道对不对,但秦怀道发现温度控制在窑内,而且在提高,赶紧记录好。

观察片刻,担心温度达不到,石灰石无法彻底烧透,烧碎,开始加大火, 从窑帽口观察着里面变化,渐渐发现有些窑帽口里面的石灰石开始不均匀下沉,燃烧室里面火色发暗, 不够明亮, 像是温度不均匀。

秦怀道毫无经验,感觉要糟,温度如果不均匀,意味着有些烧透,有些没烧透,估计是窑帽口透气不均匀导致,与其半生半熟,干脆一锅焖,一发狠,让人帮忙封盖所有窑帽口,不给透气,将火闷压下去再说。

考虑到窑门口同样会漏温,连窑门也封住,确保温度封死,稳住,心里面做好了最坏打算,待在祠堂哪儿都不去,复盘这几天的烧制过程,每一个环节都记录好,准备回头再挖两口小窑试试,就不信了。

一天后,秦怀道也不清楚闷好没,打算看看,大家闻讯赶来围观,都想知道能不能烧制成功,秦怀道让人将所有窑帽口全部打开,窑门也打开,考虑到冷却太快可能不行,让大家将口子开小点,慢慢放。

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